Re: head unit turn on wire help
You may have the ignition and power wires swapped. Based on installdr dot com the factory ignition is yellow and it should go to the red wire on new harness while the yellow wire on the new harness should go to orange factory wire. Seems odd they don't use the yellow to yellow.
Pin What It Is Typical GM Factory Typical New Radio
In Dash Wire Color Equivalent Wire Color
I +12 Volt Ignition Wire Yellow Red
J +12 Volt Battery Wire Orange Yellow
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